Binder



Oct. 13, 1925. 1,556,579

' L. E. BALTZLEY ma Angl 15, 1921 To @ZZ wiom'z't may concern:

Patented Oct. 13, 1925.

PATENT orifice.

LOUISE. BALTZLEY,IOF GLEN RIDGE, NEW JERSEY.

BINDR.

Application filed August 1341921, Serial No. 491,944.

Be it known that I, Louis EDWIN BAL'ra- LEY, citizen of the United States, and a resident of Glen Ridge, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Binders, of which the following is a specitiCatiOn.

My present invention is a" temporary binder on the order of that disclosed in my Patent'No. 1,388,140, August 16, 1921, the particular objects in this case being to provide a. binder of that type which will'be quick-opening and self-closing in its operation.

In the accomplishment of these and other objects make use of certain novel features of construction, combination and relation of parts, as will appear in the course of the following specification, which is. to be read in conjunction with the drawing accom panying and forming part of the same.

As this drawing is intended primarily for purposes of disclosures, it will be understood that the structure. may be modiiied in various respects without departure from the true spirit and scope of the invention as hereinafter defined and claimed.

Figure 1 in the drawing referred to is a side elevation of the binder in its normal closed condition.

Figure 2 is a cross sectional view of the same, showing itheld in the open relation.

Figure 3` is a back view of the binder in its closed condition.

Figure el illustrates a form of lever mechanism for operating the jaws.

Figure 5 is a rear view showing a modified form of spring.

Figure 6 is a. broken detail view of a binding screw construction for securing the jaws in adjusted relation, and Figure 7 is a similar view of a cam lever form of securing means.

llie cooperating jaw members 5 and 6 of the binder are connected in my invention by having oversliding back portions 7 and 8 curved on substantially concentric arcs drawn from a center 9 which is located at a point to the rear of and outside the binder. As will be clear from Figures 1 and 2 this results in the jawV members having an opening movement about a center which is eX- traneous to the binder and hence an extremely wide-angle ope-ning is accomplished within a binder of only moderate proportions. In other words, this construction embodies the wide-opening attribute with that of co-mpactness.y l

i The curved baclrportions are confined to the sliding movements described by suitable guide means, such as the curved lips. 10 at the ends of onev of the back portions which are arched over the edges of the companion back portion.

The jaws are operated in the present disclosure by the handles 11 and 12 projecting rearwardly from the ends of the back portions, the handle of the inner bach portion operating through a. slot 13 provided in the outer back portion. The expansion spring 14 interposed and held between these handles'provides the forcefor normally holding the jaws in their closed relation. Upon pinching the handles together against the tension of this spring it will be seen that the curved elements will be caused to slide one over the other, so as to spread the jaws as shown in Figure 2, and that on the release of this pinching force the spring will in stantly close the jaws. The construction thus provides a quick acting easily manipulated clamp, which, if desired, can be handled entirely i by the operating handles. These handles are in part received within the cavity at the back of the binder and so are protected to a material extent against accidental operation.

In Figure 4 I have shown how the handles may be extended to fo "m crossed levers 11 and 12, these levers being shown as pivotally connected at the point of crossing at 9', which point corresponds to the center from which the arcs of thel baclrs are described. It will be obvious that by thus lengthening the handles, any desired lever'- age can be obtained.

In Figure 5 I have shown how a bowed spring 15 of wire or the like may be substituted for the coiled spring first illustrated. This bowed spring is shown as made of a single piece of spring wire having an offset 16 in the center of its arch engaged beneath the handle 11 of the inner bach member and as having its ends slidinglv engaged under lips or hooks 17 struck from the outer back member.

If desired, the closing spring may be omitted and the jaws be simply adjusted by hand and then fastened by suitable securing means in their adjusted relation.

Figure 6 illustrates a form of securing CTI means suitable to this purpose and consisting of a thumb nut 18 on the screw stud 19 which is iixed to the inner back member and projects through a slot 2O in the outer back member. The inner end of this thumb nut is preferably rounded to bind against the concave face of the outer back member. Upon loosening the thumb nut it Will be apparent that the jz'aws are free for adjustment in either opening or closing directions and it Will be seen that when the proper adjustment is obtained, the jaws are quickly and firmly secured by simply tightening the thumb nut.

The securing means shown in Figure 7 is in the form of a lever 21 pivoted at 22 on the stud 19 and having cam portions 23 for binding engagement With a Washer 24 bearing against the outer back member. lt will be seen that by turning this lever one Way or the other, the back members may be released or secured in any desired adjustment.

lVhere handles such as l have lirst illustrated are provided for operating the binder jaws, these are terminated short of the point where the pressure would be applied to opposite sides of the center (9) about Which the jaws travel, as I have indicated diagrammatica'lly in Figure 1, so that the operating force Will be effective to actually shift the jaws and not simply exert a binding force thereon.

What 'I claim is 1. A binder comprising cooperating jaw members slidingly connected at the rear by concentrically curved overslidinof back portions arranged With theJ concave faces thereof to the rear of the binder and one having integral confining lips arched over the curved surfaces of the other to hold the Curved back portions close together in sliding relation.

2. The structure of claim 1 with separate and independent handles projecting free of each other from the rear of the curved back members and a sar-ing acting on the handle of one of the back members and bearing against a part of the other back member.

In Witness whereof, I have hereunto set my hand this 10th day of August, 1921.

LOUIS E. BALTZLE Y. 

